61911504822957 has 8 divisors (see below), whose sum is σ = 82840364522784. Its totient is φ = 41128490835888.

The previous prime is 61911504822901. The next prime is 61911504822971. The reversal of 61911504822957 is 75922840511916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61911504822957 - 2⁷ = 61911504822829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61911504822957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61911504822457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36461427198 + ... + 36461428895.

It is an arithmetic number, because the mean of its divisors is an integer number (10355045565348).

Almost surely, 2^{61911504822957} is an apocalyptic number.

It is an amenable number.

61911504822957 is a deficient number, since it is larger than the sum of its proper divisors (20928859699827).

61911504822957 is a wasteful number, since it uses less digits than its factorization.

61911504822957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72922856379.

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 61911504822957 in words is "sixty-one trillion, nine hundred eleven billion, five hundred four million, eight hundred twenty-two thousand, nine hundred fifty-seven".